M90S-12S Modular Online UPS – Scalable Single-Phase Power System

6kVA – 48kVA

208/120 VAC or 240/120 VAC Single Phase

Scalable modular UPS with N+1 redundancy and universal slots for continuous, high-efficiency power in residential, edge, and industrial applications.

Overview

The Xtreme Power M90S-12S is the largest chassis in the M90S single-phase modular UPS family, delivering up to 48 kW of scalable online double-conversion protection. With 12 universal slots, each bay can hold either a power module or a battery module, giving maximum flexibility to configure for capacity, redundancy, or extended runtime.

The M90S-12S includes a 10” color touch LCD display, front-access only design, integrated maintenance bypass, and hot-swappable modules. It delivers reliable, clean power for demanding applications — from advanced AV systems to edge compute containers and luxury residential energy platforms.

Key Features & Benefits

  • 12 Universal Slots – up to 12 power and/or battery modules for maximum capacity and runtime flexibility
  • Flexible Capacities – Configurable for 6, 12, 18, 24, 30, 36, 42, or 48 kW
  • System Touch LCD Display – Large 10” color display provides system-level graphics, status, and alarms
  • Scalable for Capacity or Redundancy – Configure for N+1 redundancy, maximum runtime, or full capacity
  • Extended Runtime – Scale to support long backup requirements, from a few minutes to 6 hours
  • Online Double-Conversion – Continuous, clean sine wave power for critical loads
  • Hot-Swappable Modules – Power and battery modules can be replaced without downtime
  • Front-Access Only – Simplifies installation, maintenance, and service
  • WarrantyStart-up (5×8), 3-year parts, and 2-year on-site labor included (USA & Canada)

Product Snapshot

  • Enclosure: 12-slot modular UPS
  • Capacity Options: 6 kW, 12 kW, 18 kW, 24 kW, 30 kW, 36 kW, 42 kW, 48 kW
  • Voltage: Configurable for 208/120V or 240/120V single-phase
  • Bypass: Standard front-access maintenance bypass
  • Monitoring: Large 10” system LCD + individual module LCDs
  • Runtime: Up to 6 hours at full load

Applications

The M90S-12S UPS is built for enterprise, AV, and luxury residential environments requiring extended runtime and large-scale single-phase power:

Competitive Comparisons

Related Products

  • M90S-2S – Compact 2-slot modular UPS
  • M90S-4S – Mid-range 4-slot modular UPS
  • M90S-6S – 6-slot modular UPS up to 24 kW
  • M90U-80 – Three-phase modular UPS for enterprise

Contact Us Today

The M90S-12S UPS provides 6–48 kW of scalable single-phase protection in a front-access modular chassis. With universal slots, extended runtime options, and a 10” system LCD, it is the premium choice for AV, broadcast, edge compute, and whole-home luxury applications.

Contact Us View All Products

(800) 582-4524

sales@xpcc.com

MODEL NUMBER M90S-12S6K M90S-12S12K M90S-12S18K M90S-12S24K M90S-12S30K M90S-12S36K M90S-12S42K M90S-12S48K
CAPACITY Power Rating 6kW 12kW 18kW 24kW 30kW 36kW 42kW 48kW
INPUT Voltage/Frequency Nominal 120/208V or 120/240V // 50/60Hz auto-sensing 120/240V
Connections 2PH+N+G
OUTPUT Voltage & Frequency 120/208V or 120/240V // 50/60Hz auto-sensing 120/240V
Connections 2PH+N
Efficiency / THD (full load) Up to 98% ECO mode, 93% online mode / ≤2% (Linear load);≤3% (Non linear load)
Overload Capacity 100% – 110% for 30 min; 110% – 130% for 5min; 130% – 150% for 10s; > 150% for 200ms
BATTERY SYSTEM Nominal Voltage +/-96VDC (default) or +/-120VDC
Max charging (adjustable) 4A per Power Module
MODULE Power Module 16.3”W x 24”D x 5.2”H / 38 lbs
DIMENSIONS Battery Module (M90S-BMXRV2) 16.3”W x 24”D x 5.2”H / 107 lbs
& WEIGHT Battery Module (M90-BCBAT) 7.3”W x 38.5”D x 3.2”H / 85 lbs
ENCLOSURE M90S-12S UPS 23.6”W x 36.0” D x 79.1”H // 586 lbs without modules
DIMENSIONS & WEIGHTS M90-BC External Battery Cabinet 23.6”W x 43.8” D x 79.1”H //  416 lbs without modules
ENVIRONMENT Temperature 0–40°C (32–104°F)
Altitude 5,200 ft above sea level
APPROVALS UL-1778 (TUV), cUL, FCC A, RoHS
WARRANTY 3 year electronics, 3 year battery (USA and Canada)
COMMUNICATIONS INTERFACE RS-232, USB, dry contacts, EPO, (2) intelligent slots for optional cards (Web/SNMP, Relay, Modbus)
INCLUDED IN BOX User manual, USB cable, RS-232, ViewPower software, standard anchor brackets